Improvement in oil-stoves



3 Sheets-Sheet 1.

D; SHIELDS.

OIL-STOVE,

Patented March 13, 1877.

s Sheets-Sheet z.

D. SHIELDS; OIL-STOVE;

No.188,424. Patentd March 13, 1877.

N. PETERS. FHoTo-Lnuoanwnsn, wA smNaToN n c UN TED STATES .DAVI'D sHLDs'oF FLORENCE, MASSACHUSETTS.

IMPROVEMENT in OIL-STOVES.

Specification forming part of Letters Patent No.

188,424Ldated March 13, 1877; application filed October 20,1876.

To all whom it mag concern.

Be it known that I, DAVID SHIELDS, of Florence, in-thecounty ofHampshire and State of Massachusetts, have invented a new and valuableImprovement inOil-Stoves; and I do hereby declarethat the following isafull, clear, and exact description of the construction and operation ofthe same, reference being had to the annexed drawings, making a part ofthis specification, and to the letters and figures of reference markedthereon.

Figure l of the drawing is a representation of the frame,theoiI-reservoir, and its connecting parts. Fig.2 is a perspective viewof the under side of one of the burners. Fig. 3is a top plan view of thecooking-drums. Fig. 4 is an end view of the same. Fig. 5 is 'a detailedview, showing the under side and one of the ends of-the cooking-drums.Fig; 6 is a vertical longitudinal section taken on the line a; w of Fig.3. Fig. 7 is a View, on any This invention has relation more particu-'larlyto that class of stoves in which are used hydrocarbon oils as fuelfor heating, cooking,

and other purposes to which it may be adapted.

Heretofore the great difliculty experienced was in keeping. the oil inthe reservoir cool,

in order to prevent the generation of gases and insure perfect safety intheir use; also, of allowing the gases means of egress, so as to preventthe possibility of explosion. A perfect combustion is of the utmostimportance to realize the greatest amount of heat from the oil consumed,and it is. also generally essential that the stove. should be soconstructed as to prevent the transmission of heat from the severalparts that become heated by the flame to the reservoir or tank whichholds the oil; and therefore to overcome the above named difficulties,and to insure perfect combustion, are among the most important features.of my invention, as well as to construct a stove of the characternamed, that may be tion, therefore, consists in so suspending thereservoir which contains the oil that it may be adjusted to or from theheating or cooking drums for the purpose of 'lighting or trimming thewick of the burner, or removing the same to replenish the oil in thereservoir, or to recover the wick when turned below the ratchet anddropped in the reservoir, and also admitting of it being elevated whenthe stove is required to be used, the construction and ar rangement ofthe several parts whereby these results are obtained being hereinafterdescribed and pointedout in the'claims.

My invention also consists, in connection with the adjustableoil-reservoir formed with a central air-opening, of the heating orcookwhen either drum is placed upon the frame to circulate through thesame, and thereb ,keep the oil within the reservoir cool.

in which the'lower end of the wick-tube is secured, said plate having adownwardly-pro-.

through the wick, thereby preventing the transmission of heat down thewick into the oil.

My invention also consists in providing the preventing the transmissionof heat from the connections.

My invention also consists in providing the heating and cooking drumswith a supplemental cone placed over and around the inner cone, leavinga space between the two, inconnection with perforations or suitableopenings through the plate upon which the cones rest,

space between the cones directly to the flame, thereby greatlyincreasing combustion, and burning the gases and smoke.

My invention further consistsin a cap to the easily' operated andhandled, and e fiective in its several operating parts; and my, inveningdrums, with a similar opening, so that over the reservoir anunobstructed passage is g obtained, for the purpose of allowing theairMy invention also consists of a metal plate,

jecting perforated flange, to allow the air to. pass underneath the endof the wick-tube and heating and cooking drums with V-shapedprojections, securedto the under side of the same, the sharp edges ofwhich rest upon the frame supporting the oil-reservoir, thereby,

heated part of the stove to the frame and its for the purpose ofconducting air through the more convenient removal.

has vertical partitions h secured to the upper heating-drum, convex inform, and having a central depression, for the purpose of forming acurve upon the inside, against. which the gases and sinokestrike,followthe curve, and rotate downward, and are consumed by the flame.while the heat passes out through perforations or suitable openingsaround the top of the drum, and are deflected'downward by the projectingedges of the cap.

In the accompanying drawings, A represents the oil-reservoir, ofcast-iron or other .-uitable metal, suspended on a frame, 13, by cordsor chaiusc a, connected thereto by eyes or books b, or otherconvenienhmeans.

The cords a pass over grooved pulleys 0, Sc

cured to the frame, andconnect to a horizontal shaft, 0, near itscenter, said shaft having its hearings in the frame B, and the cords orchains alt-are connected to the shaft nearits ends. a

.mUpon one end of the shaft isfa ratchetwheel, d, and tothe frame B issecured a pawl, e, to' prevent the shaft from slipping back whenrotatedin raising the oil-reservoir A. A hand-wheel, f, crank, or othersuitable means, may be employed to operate the shaft 0. Recessed platesg'project from the corners of the reservoir and travel upon verticalratchet and fallen into the reservoir; also, of.

the ready elevation of said reservoir when the stove is required foruse.

The reservoir A has a central opening, D, for the purpose of allowingthe air to circulate, and thereby keep the oil cool, as well as toenlarge the surface of the reservoir without enlarging its capacity, sothat the burners may be placed far enough apart to give room for largeutensils, and thereby admit of their The reservoir A part and sides ofthe same, which are made slightly less in their depth than the depth ofthe interior of the reservoir, in order to form a space for the oil topass underneath said partitions to all parts of the reservoir, the

a purpose of the partitions being to prevent the oilfrom splashing byany sudden motion of said reservoir. The reservoir has formed thereinopeningst', around which are projecting flanges i, for the purposeofpreventing the oil within the reservoir from overflowing, and also tosecurely hold the burnersin place. The wicktubes j of the burners havesecured, near their to, the ordinary air-strainer k. Below thisair-strainer, and secured directly to and around the'wicktube, is aplate, E, of copper, brass,

or other metal of good heat-conductingqu alities. the purpose of whichis to draw the hea t fromthe wick-tube and radiateit from the stove,whereby the heat is prevented from passing down said tube and heatingthe oil within the reservoir. A metal plate, F,;is employed, throughwhich the lower end of the wick-tubejpassesand is secured thereto bysoldering or other suitable means. This plate a F has a downwardlyprojecting. perforated flange l, made somewhat deeper than the flanget", upon the oil-reservoir, so th atwhen the perforated flange is'Qplaced over the flange t" the perforations will not be entirely covered,but allow a suflficient number of the perfora-. tions to be exposed toform an inlet for the air, whichpasses through and underneath the endofthe wick-tube,and through the wick into the oil. The jflange 1", overwhich the perforated flaugel is secured, admits of the ready removal orreplacing oftheqburner when desired, Thewick within the tubeais'ylowered orraised in the ordinary manner. The heating and cooking drumshave aisup plemental cone, m, snrroundingthe inner or central cone n,and leaving a space between for the pu'rposeof conducting the airthrough said space, the air first passing through per j l forations orsmall holesdmade through the plate Iof the cooking-druu1, and throughthe 1 diaphragm O of the heatingdrums, upon which the cones rest, toallow free passagcof ithe air, which afterward passes through the spacebetween the cones, as before described, and thence directly to theflame, thereby in-" creasingcombustion and burning the gases land smoke.W a 1 The side G of the cooking-drum I prefer to lconstruct of sheetmetal; while the top H and bottom I I prefer being cast metal. Aroundthe cones of the cooking-drum are chimneys J lh'aving an open front on aline withan openling in the side G, and over said openingin ;the chimneyis secured a window, 1;, of mica gfor observing the light of the flame Iof the ibnrner. Upon the top H of the drum is a round scalloped flange,K, to support vessels thereon, and allow the air to freely circulatejunderneath them.

Both the heating and cooking drums'hav openings L to correspond with thecentral opening D in the reservoir,for the purpose of allowing thecirculation of air, as before de scribed, and also have secured to theunder side thereof V-shaped projections M, the sharp edges of which restupon the upper part of the frame B or upon flanges q attached to thesame, the object and purpose beingto have as little bearing-surface aspossible brought in contact with the frame, and thereby prevent to agreat degree the transmission of heat from the heated parts of the stoveto the frame and itsconnections.

I do not wish, however, to -confine myself jections may be used toobtain the above re- -u of said caps.

suit without departing from the principle of my invention.

The heating-drums are placed in the same manner upon the frame as thecooking-drums,

and have the cones and perforations, as previously described. The drumsN have mica windows 1', and are secured to a diaphragm. 0. These drumshave a .convex cap, P, of

' suitable metal, placed over and secured to the top of the same, andare formed with a central recess or depression, 8, for the purpose offorming a'curve upon the inside of said caps,

or diminished, as circumstances may require.

Having now fully described the construction andoperation of myinvention, what I claimas new, and desire to secure by Letters Patent,is 1 l. The reservoir A and frame B, in combination with the shaft 0,cords or chains 0. a,

pulleys c, ratchet-wheel d, and pawl 6, substantially as and for thepurpose specified.

2. The combination, with the drums, of an oil-stove, having-a centralopening, 11, of an adjustable oil-reservoir, A, formedwith asimilar'opening, D, substantially as and for the purpose described.

3. The perforated flange 1 extending below the end of the wick-tube, andmade somewhat deeper than the flange t", so that when placed over thesame an inlet for the. air is formed to allow its passage to the wick,for the purpose set forth.

' 4. The removable drums, having sharpedged projections M upon the underside thereof and resting upon suitable supports q of the frameB,'su'bstantially as and for the purpose specified.

5 The combination, with -the cone n and perfora'tions'o of thesupplemental cone m, substantially as and for the purpose set forth.

6. The combination, with the drum N, having near its upper edgeperforations or holes t, of the convex cap P, with a central depression,8, substantially as and for the purpose described.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses. I

DAVID SHIELDS. Witnesses NAT. E. OLIPHANT,

GEO. R. PORTER.

